Lathe tool-holder.



No. 628,707. Patented luly II, I899.

J. GREGORY.

LATHE TOOL HOLDER.

(Application filed Aug. 16, 1898.)

(No Model.)

mmmun INVENTOR .Tames Gregory 7 Br 4 TTORNELIS Uwrrnn Stratus Pn'rnnrJAMES GREGORY, OF BRIDGEPORT, CONNECTICUT.

LATHE TOOL -HOLDER.

SPECIFICATION forming part of Letters Patent No. 628,707, dated July 11,1899. Application filed August 16, 1898. Serial No. 688,738. (No model.)

.To ctZZ whom it may concern/.-

Be it known that 1, JAMES GREGORY, a citizen of the United States, and aresident of Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements in LatheTool- Holders, of which the following is a specification.

This invention relates to' new and useful improvements in lathe-toolholders, such as are used in connection with the tool-stock of ametal-working lathe.

It is the object of my invention to provide an improved form oftool-holder which is adapted to receive tools of varying shapes and fordifferent purposes in the matter of lathework and to so construct saidholder as to retain said tool at different angles with relation thereto,thereby enabling the operator to operate upon the interior and exteriorof a cylindrical of tubular body andsimilar work.

It is finally the object of this invention to provide an improved formof clamp whereby said tools may be firmly retained within the holder andat the same time to permit of quick and accurate adjustments of thetools therein.

With the above objects in view my invention resides and consists in thenovel construction and combination of parts set forth in theaccompanying drawings, forminga part of this specification, and uponwhich similar characters of reference denote like or corresponding partsthroughout the several figures, and of which- Figure 1 shows aperspective view of my novel tool-holder, the same containing a novelform of cutter clamped therein. Fig. 2 is a horizontal sectional planview of the construction shown in Fig. 1. Fig. 3 is a central verticalcross-section on line a a of Fig. 1.

Referring to the characters of reference marked upon the drawings, Aindicates the shank of my novel tool-holder, the same being -preferablyflat, of a shape to readily fit and be clamped into any ordinary form oftoolstock in the customary manner. The head B of this holder is enlargedand provided with bores O and D, arranged horizontally therethrough atan angle to the holder and at a right angleto each other. These boresmay The means for clamping the cutters within the holder comprises acylindrical post G, fitted within a corresponding vertical recess H,which latter extends below the transverse bores D. (See Fig. Said postis provided with an opening I of a size corresponding to that of thebores before mentioned and so located as to register with either of saidbores when said post is properly adjusted. It will thus be apparent thatwhen the post is adj usted so that the opening registers with either thebore 0 or D a cutter maybe firmly inserted therethrough, as shown in thedrawings. The post G is provided with a threaded stem J, which receivesthe nut K. It will thus be seen from the foregoing construction thatwhen it is desired to clamp the cutter and its sleeve within either boreof the holder it is simply necessary to tighten the nut K, which drawsthe post up into the recess and binds the cutting-tool firmly againstthe head of the holder.

In the drawings I have shown the head of the holder s ubstantiall ysquare,with the bores to receive the cutters arranged at a right angleto each other. It is of course obvious that said head may be of.cylindrical formation and its bores arranged at other than a rightangle, and in fact more than two bores could be provided. I find inpractice, however, that with two bores arranged as herein shown amechanic can adjust a tool within the holder so as to get at and operateupon work of almost any character when placed into a lathe, therebyavoiding the necessity of making special tools and holders for specialwork.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is- V A tool-holder of the class described, the samecomprising a head provided with transverse holes at an angle offorty-five degrees to the shank, a recess at right angles to said holesand at their intersection, a post fitted Signed at Greensburg, in thecounty of to said recess and bearing holes to register Westmoreland andState of Pennsylvania, with the holes aforesaid and havingareduced this25th day of July, A. D. 1898.

threaded stein projecting from said recess, a JAMES GREGORY. 5 nutengaging said stem to operate the post, WVitnesses:

a bushing interposed between the post and J. A. O. RUFFNER,

head as and for the purpose described. H. W. l/VALKINSHAW.

